Joseph angus



2 Sheets-Sheet l.

( NOMOavel.)

J. ANGUS.

TOOL OSGILLATING DEVICE POR SLOI'TING MACHINES. No. 298,267..

Paten-ted May 6, 1884.

W|TNESSES= (No Model) 2 Sheets-Sheet 2. Y

J. ANGUS.

TOOL OSGILLATING-DBVICE lPGB. SLOTTING- MAGHINBS.

No. 298,267 Patented May 6, 1884.'

Fig. 7.

'WITNESSES;

NiTiiD i STATES Trice.

aTnNT TOOL-OSCILLATING'DEVICE FOR SLOTTING-IVIACHINES.

SPECIFICATION forming part of Letters Patent No. 298,267, datedMay 6, 1884.

pplic-ation filed October 1, 1881. (No model.) Patented in England March 13, 1880, No.1,091- i T @ZZ whom t may concern,.-

Be it known that I, J osEPH ANGUs, a sub,- ject of the Queen of GreatBritain, residing at South Lambeth, in the county of Surrey, England, have invented certain Improvements in Tool-Oscillating Devices for Slotting-Machines, of which the following is a specification.

My invention relates to improved mechanism for holding and shifting the cutting-tool of a slotting-machine,whereby it may be made to out in both directions, instead of being idle on the back or up stroke, as in ordinary machines of this character; whereby the tool may be turned with the bar and set to cut at any angle in ahorizontal plane without removing the work, and whereby the tappets and tappet-rod are so arranged in relation to the axis of the cylindrical bar as to enable the samev to be turned on its axis vand secured for cutting without stopping the machine or retarding the continuous tipping action of the doublecutting tool.

In the drawings, which serve to illustrate my invention, Figure 1 is a side elevation on a small scale, showing the manner of attaching the tool-bar to the ram of a slotting-ma-V Y chine, the latter being indicated in dotted lines. Fig. 2 ris an enlarged detached view, partly in section, showing the tappets and the coupling for the operating or tappet rod. Fig. 3 is a mid-section through the axis of the oscillating tool-holder, taken in the plane ofthe tool-bearing. Fig. 4 is a sectional View ofthe tool-holder, taken on the line 4 4 in Fig. 8. Figs. 5, 5, 6, 6, and 7 are enlarged detached views of the sustaining-ring and grippingblocks for attaching the tool-bar to the machine-ram. Fig. 8 represents a side, front,

and end view of an improvedangular doublecutting tool adapted to out both ways with the ordinary single-feeding gear. Fig. 9 represents an arrangement of double-cutting, roughing, and finishing tools adapted to work together in the same tool-holder, and to be held in position by a single set-screw.

A represents the tool-bar of a slotting-machine, which is cylindrical, and is secured to the ram by means of two pairs of steel gripping-blocks, a a, which are tted into ordinary tool-straps, b, and provided with set- Ascrews c, as clearly shownin Figs. 6, 6, and

7 which are respectively a side elevation, a

a set-screw, f, whereby it may be pressed forcibly upon the tool-bar. This device is shown best in Figs. 5 and 5, the former of which is a cross-section of said collar and the latter a fragmentary plan of the same. Vhen this collar is clamped on the tool-bar,the workman may unclamp the gripping-blocks a a and turn the bar, so as to set the tool to cut at any angle in a horizontal plane without danger of its slipping down, and he may do this without stopping the machine.

In the lower end of the tool-barA is formed a cylindrical bearing to receive an oscillating or rocking holder, B, which is held in place by means of a tail-pin, nut, washer, and locknut, as shown in Fig. 8. The holderB is also provided with a flange or shoulder, g, which has a recess to receive the hooked end h of a tappet-rod, C, whereby the holder is oscillated in its bearing. lies in a groove formed in the tool-bar A, and its upper end is screwed into a block, z', Fig. 2, which block rests in a recess in the upper part of the tool-bar, and has sufficient vertical play in the recess to permit the rod C to oscillate the tool E. The upper part of the tappet-rod C is screwed into said block t' in a line with the axis of the tool-bar, as shown. On the tappet-rod are set the tappets j j, faced with rubber vpads jj, or pads of some soft material which will yield a little. D is a tappet-bracket fixed to the frame of the machine, and provided with an elongated aperture or slot, k, (see detached view, Fig. 1,)

through which the tappet-rod passes. This elongation of the aperture 7c permits the toolbar and its attachments to be moved bodily across the face ofthe slotting-machine rain without disturbing the bracket. This is useful where the slide-screw of the machinetable has not sufficient travel to move the work to the tool.

E is the slotting-tool, which iit's snugly in a transverse aperture throughv the holder B,

The lower part of this rod C IOO wherein it is securely held by a sctscrew, Z. The projecting ends of the tool E move in slots in the tool-bar A, the sides of which slots limit the rocking of the tool to the extent required, as represented in Fig. 4.

To prevent chips and foreign particles from entering the slot on the cutting side, I provide a plate or apron, m, of vulcanized rubber or other similar material, which I slip over the cutting end of the tool, as shown. The tool has double cutting-edges on opposite sides, as shown in Figs. 4 and 8.

The operation is as follows: Vhen the tool E (shown at the end of the upstroke in Fig. 1) descends, it cuts the metal and passes a little beyondthc lower side of the work. .At this moment the upper tappet (having also descended during the cutting operation) engages the xed bracket D and detains the rod C from further descent, while the tool-bar A moves downward a little farther, which movement causes the hooked end 7L of the rod C, engaged with the tool-holder B, to rock the said holder and set the tool at the opposite angle, so that the upper cutting-edge thereof may cut during the succeeding upstroke. The tool then aseends and cuts the metal in the upward direction until the lower tappet engages the under side of the fixed bracket D, which again shifts the tool in a similar manner for the next downstroke.

rIhe preceding description of the slotting attachmentrelatcs to a machine having a doublefeeding gear, so as to give an independent feed to each up-and-down cut.

Fig. 8 represents a tool adapted to apply the double cutting attachment to ordinary slotting-machines, which are only provided with a single-feeding gear suiting the ordinary single-cutting tool. For this purpose the top cutting-edge of the tool a, Fig.. S, is thrown slightly forward, so that by simply doubling the amount of the ordinary feed for single-eutting tools the bottom edge of the tool takes off half of the double feed of metal in making the downward stroke, and after the tool is shifted to the opposite angle at the end of the stroke the top or forward edge of the tool takes off the remaining half of the double feed of metal in making the upward stroke, thus cutting both ways, and obviating the necessity of an independent feed for each up-and down cut. Then the tool is at work, it presses against diagonally-opposite sides of the slots in the bar A, as shown in Fig. 4, and relieves the tool-holder B of almost all straimwhereby durability and accurate working are secured.

Two ofthe double-cutting tools may be set in the same tool-holder, so as to admit of performing the roughing and iinishing cuts at the same operation. Fig. 9 shows an arrangement by which this is effected, the two doubleeutting tools presenting four cuttingedges to the work. The two cutting-edges of the roughing-tool traverse a plane slightly above those of the finishing-tool, as indicated by dotted lines -in the figure, so that the planing of the metal is completed by the single traverse of the tool-bar. These two tools are placed in the same aperture in the tool-holder as the single tool, requiring no additional room, and they are held bya single set-screw, the same as used for a single tool, so that no change of construction is required for apply- 'ing two or more tools.

The attachment of the upper section of the tappet-rod C to the block 13 in a line with the axis of the tool bar or holder A enables the holder to be turned on its axis without altering the relative positions of the tappets and the bracket D, as will be readily understood.

I herein disclaim the subject-matter of claims 1 and 2 in my application for a tool-holder for planingmachincs filed November 26, 1880, Serial No. 21,190.

Having thus described my invention, I claim- 1. In a slotting-machine, the combination of a vertically-reciprocating tool-bar adjustable on a vertical axis, a tool-holder mounted in the tool-bar and rocking on an axis at right angles to the axis of thetool-bar, and a doublecutting tool mounted in the tool-holder, whereby the tool may be made to cut in a direction parallel with the axis of the toolbar and through any degree of the circle around the said tool-bar.

2. In a slotting-machine, the combination of a tool-bar adjustable on its axis, a toolholder having a rocking movement in the toolbar, a tool-reversing rod mounted on the toolbar, and a stationary tappet -bracket, substantially as and for the purpose herein specified.

3. The combination, in a slotting-machine, of the tool-bar A, mounted in bearings on the ram, the rocking toolholder B, mounted in the said bar, the tappet-rod C, made in two parts and connected by the block i., the tappets on said rod, and the fixed tapp et-bracket, all arranged to operate substantially as set forth.

4. The combination, with the ram of a slotting-machine, of the tool-bar A, the rocking tool-holder B, the tappet-bar C, its lower end provided with a hook or projection to engage the too1-holder, and arranged to play in a groove in the tool-bar, and its upper part provided with tappets, and coupled to the lower part in the axis of the tool-bar by means of the block t', and the fixed tappet-bracket D, all arranged to operate substantially as set forth.

5. 'Ihe combination, with the ram of a slotting-machine, of a cylindrical tool-bar bearing a cylindrical tool-holder, gripping-blocks, and a sustaining-ring, substantially as herein specified.

In witness whereof` I hav"e hereunto signed my name in the presence of two subscribing witnesses.

XVitnesses: JOSEPH ANGUS.

CHARLES GnossnTE'rE, GHAs. ROCHE.

IIO 

